NAT RESOURCE ISSUES
NAT RESOURCE ISSUES ESRM 315
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This 2 page Class Notes was uploaded by Sallie Lind PhD on Wednesday September 9, 2015. The Class Notes belongs to ESRM 315 at University of Washington taught by Staff in Fall. Since its upload, it has received 6 views. For similar materials see /class/192027/esrm-315-university-of-washington in Environmental Science and Resource Management at University of Washington.
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Date Created: 09/09/15
ESRM 315 CFR 512 C Midterm Exam Review Topics covered on this midterm Any material covered in lectures the field trip and in readings and published notes may appear in one or more questions on the exam However the main focus for preparation should be on the major themes and concepts associated with the ecology of old growth forests You should be comfortable enough with the key concepts to apply them in unfamiliar ie hypothetical scenarios SOME REVIEW QUESTIONS FOR THE FIRST EXAMINATION Equot W 5 U 9 If asked by an uninformed friend how would you explain the difference between an old growth forest and a young managed standiin a paragraph or two With regards to the development of a natural Douglas r forest see Franklin et a1 2002 can you differentiate between a structure a process that contributes to structural development and a developmental stage What are some of the important processes that contribute to stand structural development Summarize differences in dominant tree mortality processes in the rst 100 years and in subsequent centuries in Douglas r forests If you walked into a Douglas r forest on the west side of the Cascade Range what structural elements would you look for to determine whether it is oldgrowth or alternatively a mature stand with legacies Do you understand the concepts of shade tolerance and of successional status seral or climax and why they are not always equivalent What are the important in uences of a forest on a small stream What does it provide or control with regards to the aquatic ecosystem How do these in uences change if at all when you get to a big river How does structural development sequence different between Douglas r Franklin et a1 2002 and valley bottom spruce hemlock Van Pelt et a1 2006 forests Contrast the dominant disturbance agents in these forests Do you understand the distinctions between ecosystem composition function and structure What do we mean by function What is a biological legacy Can you contrast the types of legacies that occur following different kinds of natural and human disturbances What are some functional roles of live trees Dead trees How do elk in uence the structural development process and structural endpoint in valley bottom sprucehemlock forests 13 Do you know what a nurse log is Can you explain the mechanisms that cause the phenomenon 14 Describe the multiple roles of the northern ying squirrel in oldgrowth Douglas r forest ecosystems A few additional notes and review question Biological legacies how are they created How do different disturbances create different types and levels of coarse woody debris How do amounts and types of biological legacies fluctuate over with time and stand development in the Pacific Northwest What types of organisms depend on biological legacies and why What does Mt St Helens have to teach us about the importance of legacies Coarse woody debris how is coarse woody debris important in a hydrologic sense A nutrient sense Think slow nutrient release over time and nitrogen fixation site A carbon storage sense A tree regeneration sense nurse log I I A geomorphologic sense Think about South Fork Hoh River hike A wildlife habitat sense Think both terrestrial and aquatic Why and how are size and species important in coarse woody debris dynamics Think about coarse woody debris over a gradient from headwaters to estuary and ocean how it is added e g avalanche and slope failure up high riverbank undercutting down low the functional roles it plays how mobile it is at different points etc Belowground processes with Dr Bob Edmonds Why are these processes important Consider biodiversity mycorrhizal enrichment of trees and other plants decomposer fungibacteria as important nutrient cyclers and soil invertebrates as the basis for entire trophic food webs All this impacts forest health productivity and diversity Belowground processes are also important for the everimportant terrestrialaquatic connection filtration of water entering streams hyporrheic zone control etc High turnover of fine roots in soil 4070 of trees primary productivity is channeled to this purpose Trophic webs truf es hypogeous fungigtflying squirrelsgtspotted owl Fungi incredible diversity 2000 spp associated with Douglasfir alone as symbionts this creates ecological redundancy and resiliency Do belowground processes shutdown in winter in Northwestern forests Think of Findley Lake Mt St Helens ash fall actually stimulated belowground decomposition Wildlife and biodiversity with Dr John Marzlu Challenge to notion that old growth has superdiverse oras and faunas Discussion of marbled murrelets nest predation by corvids and others how hum ans contribute to nest predation by corvids and questions about fragmentation and population dynamics What is a what is a source and how 0 we recognize a sink Differences between taxa amphibians mammals birds in response to forest age and structure Foliage height diversity and birds Canopy partitioning Cavity nesters importance of snags etc What is a keystone species
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